- Psoriasis appears first 85% of time
- Usually medium- or large-joint invlovement
- RF maybe positive, even CCP
- Nail pits [see pix below]
- Prominent DIP disease
- Dactylitis [see pix below]
- Enthesopathy (esp. inflammation at insertion of Achilles tendon)
- Tendonitis of hand flexors
See also postings Monoarticular Arthritis and Polyarthralgias.
Nail Pits
Dactylitis (“sausage digits”)